Set WooCommerce order status when order contains a specific item

Question

Am trying to set any order that has the item ( item id 1511 ) to be set as 'processing'

I tried to play around with this code in this answer, but without the desired result. I'm not sure what am doing wrong?

I tried going like this:

function action_woocommerce_order_status_changed( $order_id, $new_status, $order ) {

        $items = $order->get_items();
        if ( $items as $item ) {
            // Get product id
            $product_id = $item->get_product_id();

            if ($product_id == 1511 ) {
                $order->update_status( 'processing' );
                break;
    }
}
add_action( 'woocommerce_order_status_changed', 'action_woocommerce_order_status_changed', 10, 4 );

I appreciate any advice.

Answer 1

woocommerce_order_status_changed action hook is triggered each time when order status change.

So for your question use the woocommerce_checkout_order_created hook (that is executed, before the e-mail notifications are sent) or the woocommerce_thankyou hook depending on your wishes.

So you get:

function action_woocommerce_checkout_order_created( $order ) {
    // Already contains the correct status
    if ( $order->get_status() == 'processing' ) return;
    
    // Set variable
    $found = false;
    
    // Get order items = each product in the order
    $items = $order->get_items();

    foreach ( $items as $item ) {
        // Get product id
        $product_id = $item->get_product_id();

        if ( $product_id == 1511 ) {
            $found = true;
            // true, break loop
            break;
        }
    }

    // True
    if ( $found ) {
        $order->update_status( 'processing' );
    }
}
add_action( 'woocommerce_checkout_order_created', 'action_woocommerce_checkout_order_created', 10, 1 );

OR

function action_woocommerce_thankyou( $order_id ) {
    // Get order
    $order = wc_get_order( $order_id );

    // Already contains the correct status
    if ( $order->get_status() == 'processing' ) return;
    
    // Set variable
    $found = false;

    // Get order items = each product in the order
    $items = $order->get_items();

    foreach ( $items as $item ) {
        // Get product id
        $product_id = $item->get_product_id();

        if ( $product_id == 1511 ) {
            $found = true;
            // true, break loop
            break;
        }
    }

    // True
    if ( $found ) {
        $order->update_status( 'processing' );
    }
}
add_action( 'woocommerce_thankyou', 'action_woocommerce_thankyou', 10, 1 );